CN111561227A - Concrete column base steel plate retaining wall structure enclosure system - Google Patents
Concrete column base steel plate retaining wall structure enclosure system Download PDFInfo
- Publication number
- CN111561227A CN111561227A CN202010401142.4A CN202010401142A CN111561227A CN 111561227 A CN111561227 A CN 111561227A CN 202010401142 A CN202010401142 A CN 202010401142A CN 111561227 A CN111561227 A CN 111561227A
- Authority
- CN
- China
- Prior art keywords
- retaining wall
- concrete column
- steel plate
- plate retaining
- barricade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
- E04H17/20—Posts therefor
- E04H17/22—Anchoring means therefor, e.g. specially-shaped parts entering the ground; Struts or the like
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
- E04H7/24—Constructions, with or without perforated walls, depending on the use of specified materials
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
- E04H2007/225—Silos with retaining wall type wall elements, e.g. trench silos
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Retaining Walls (AREA)
Abstract
The invention discloses a concrete column base steel plate retaining wall structure enclosing system which comprises concrete column bases, wherein two concrete column bases are arranged in one structural unit, a plurality of structural units are connected to form an integral retaining wall, a counter-pull anchor is arranged in each concrete column base, the concrete column bases are vertically arranged, and connecting pieces are welded at two ends of each counter-pull anchor. Two relative distributions in a constitutional unit be provided with steel sheet barricade back beam between the connecting piece, two from top to bottom be provided with assembled steel sheet barricade between the steel sheet barricade back beam, the invention is through prefabricating the concrete column base in the mill, it reaches the place through the accurate positioning of pile driver and pile driver to design elevation to transport, the steel sheet barricade is makeed in advance in the mill, is connected with the concrete column base after the on-the-spot hoist and mount, this kind of construction mode is very big has solved the more environmental pollution problem of original concrete feed bin wet work, has solved the lower scheduling problem of original conventional concrete feed bin degree of mechanization, through the mill processing and the on-the-spot installation of component simultaneously, has greatly promoted the.
Description
Technical Field
The invention relates to the technical field of maintenance structure construction of stockpiling plants, in particular to a concrete column-based steel plate retaining wall structure enclosure system.
Background
For a long time, the stockpiling factory adopts a concrete retaining wall construction scheme, and plays an active role in the long-term construction process.
However, the concrete retaining wall structure maintenance system at the present stage faces three constraints:
1. the concrete pouring wet operation is more, the requirements of environmental protection and dust emission treatment at the present stage cannot be met, and the risk of shutdown and pause of an enterprise can be borne when the concrete pouring wet operation is serious;
2. the labor and material cost is higher at the present stage, more workers and wood are used in the traditional pouring mode, and the cost is higher;
3. the concrete structure needs to be maintained on site in 28-day age, the project construction period is directly influenced, and the steam curing process adopted in factory prefabrication can greatly reduce the maintenance time.
Disclosure of Invention
The invention aims to provide a concrete column-based steel plate retaining wall structure enclosure system to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a concrete column base steel sheet retaining wall structure envelope system, includes the concrete column base, be provided with two in a constitutional unit of concrete column base, a plurality of constitutional units link to each other and form whole barricade. Be provided with the anchor piece of drawing in the concrete column base, and be in vertical setting in the concrete column base, all weld at the both ends of drawing the anchor piece has the connecting piece, two relative distributions in a constitutional unit be provided with steel sheet barricade back of the body roof beam between the connecting piece, two from top to bottom be provided with assembled steel sheet barricade between the steel sheet barricade back of the body roof beam, there is barricade hoist stiffening beam in the both sides of assembled steel sheet barricade through bolt fixedly connected with barricade. Firstly, comprehensively determining the distance between concrete column bases and the sectional dimension and the length of the concrete column bases according to the stacking condition of projects and the scale of factories, prefabricating in a prefabricating factory, pre-burying a counter-pull anchor in the concrete column bases in the prefabricating process, transferring the concrete column bases to the site, precisely positioning and pressing the concrete column bases to a designed elevation by using a pile pressing machine, welding a connecting piece on the counter-pull anchor after the pile pressing is finished, enabling the elevation and the center positioning of the connecting piece to be consistent with the design, then connecting a steel plate retaining wall back beam on the connecting piece by bolts, determining the width and the thickness of a steel plate of an assembly type steel plate retaining wall by structural calculation according to the stacking condition, the distance between the concrete column bases and the depth of soil penetration, wherein the width is the same as the vertical distance between the counter-pull anchors, carrying out machining in the factory, considering the stability of the steel plate in hoisting and the error in the construction of the concrete column bases, adding, and hoisting the assembled steel plate retaining wall to a preset position, and adjusting the construction error between the concrete column foundation and the assembled steel plate retaining wall through bolts.
As a further scheme of the invention: the split anchors are centrally located the same as the connector so that the split anchors are in line with the connector.
As a still further scheme of the invention: the connecting piece with to drawing anchor end plate welded fastening, be provided with the slotted hole on the connecting piece, the connecting piece passes through bolt and steel sheet barricade back of the body roof beam fixed connection, adjusts the construction or the machining error of concrete column base, connecting piece and steel sheet barricade back of the body roof beam through the slotted hole.
As a still further scheme of the invention: the steel plate retaining wall back beam is made of channel steel or angle steel, the mounting hole is formed in the side face of the steel plate retaining wall back beam, the size and the distance of the mounting hole are consistent with the horizontal direction of the assembled steel plate retaining wall, and therefore the assembled steel plate retaining wall can be installed conveniently.
As a still further scheme of the invention: the utility model discloses a concrete column foundation, including barricade hoist and mount stiffening beam, including barricade hoist and mount stiffening beam, the barricade hoist and mount stiffening beam adopts the acromatic angle steel to make, just the slotted hole has been seted up on barricade hoist and mount stiffening beam limb, the assembled steel sheet barricade is vertical to be provided with the round hole to edge and slotted hole correspondence, and interval and location are the same with barricade hoist and mount stiffening beam, barricade hoist and mount stiffening beam passes through the bolt and is connected with the assembled steel sheet barricade, barricade hoist and mount stiffening beam limb is perpendicular with assembled steel sheet barricade limit, relies on the slotted hole to adjust.
Compared with the prior art, the invention has the beneficial effects that:
the concrete column foundation is prefabricated in a factory, the concrete column foundation is transported to a site and is accurately positioned through the pile pressing machine and pressed to a designed elevation, the steel plate retaining wall is prefabricated in the factory and is connected with the concrete column foundation after being hoisted on site, the construction mode greatly solves the problems of more environmental pollution caused by wet operation of the original concrete bin, the problems of lower mechanization degree and the like of the original conventional concrete bin, meanwhile, the progress of projects is greatly promoted through factory processing and site installation of components, the construction period is shortened, and great economic benefits are generated.
Drawings
Fig. 1 is a schematic structural view of a structural unit of a concrete column-based steel plate retaining wall structure enclosing system.
Figure 2 is a drawing of the connection of the split anchor and the connector in a structural unit of the concrete column based steel retaining wall structure envelope system.
Figure 3 is an exploded view of a structural unit of a concrete column based steel retaining wall structure envelope system.
Fig. 4 is a schematic view showing connection of a plurality of structural units of a concrete column-based steel plate retaining wall structure maintenance system.
In the figure: 1. concrete column foundations; 2. oppositely pulling the anchor; 3. an assembled steel plate retaining wall; 4. a connecting member; 5. a steel plate retaining wall back beam; 6. and (5) hoisting the stiffening beam by the retaining wall.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, in an embodiment of the present invention, a concrete column-based steel plate retaining wall structure enclosure system includes two concrete columns 1, two concrete columns 1 are disposed in one structural unit, and a plurality of structural units are connected to form an integral retaining wall. Be provided with in the concrete column base 1 and to drawing anchor 2, just vertical setting in the concrete column base 1, connecting piece 4, two relative distributions in a constitutional unit are all welded at the both ends of drawing anchor 2 be provided with steel sheet barricade back beam 5 between the connecting piece 4, two from top to bottom be provided with assembled steel sheet barricade 3 between the steel sheet barricade back beam 5, there is barricade hoist and mount stiffening beam 6 vertical both sides of assembled steel sheet barricade 3 through bolt fixedly connected with barricade.
Firstly, comprehensively determining the distance between concrete column foundations 1 and the section size and length of the concrete column foundations 1 according to the stacking condition of projects and the scale of a plant area, prefabricating in a prefabricating factory, pre-burying a counter-pull anchor 2 in the concrete column foundations 1 in the prefabricating process, transferring the concrete column foundations 1 to the site, accurately positioning and pressing piles to a designed elevation by using a pile pressing machine, welding a connecting piece 4 on an end plate of the counter-pull anchor 2 after the pile pressing is finished, enabling the elevation and the center positioning of the connecting piece 4 to be consistent with the design, then connecting a steel plate retaining wall back beam 5 on the connecting piece 4 through a bolt, and simultaneously determining the width of an assembled steel plate retaining wall 3 and the thickness of the steel plate through structural calculation according to the stacking condition and the distance and the penetration depth of the concrete column foundations 1, wherein the width is the same as the vertical. The steel plate is formed by machining in a factory, the retaining wall hoisting reinforcing beam 6 is additionally arranged at the edge of the plate in the vertical direction before hoisting in consideration of the stability of the steel plate in hoisting and the error in the construction of the concrete column foundation 1, the assembled steel plate retaining wall 3 is hoisted to a preset position and is connected to the steel plate retaining wall back beam 5 through bolts.
The split anchor 2 is centered and at the same elevation as the connector 4 so that the split anchor 2 and the connector 4 are in line.
2 and connecting piece 4 welded fastening on the anchor piece that pulls, be provided with the slotted hole on the connecting piece 4, connecting piece 4 passes through bolt and 5 fixed connection of steel sheet barricade back beam.
And construction or machining errors of the concrete column foundation 1, the connecting piece 4 and the steel plate retaining wall back beam 5 are adjusted through the long round holes.
The steel plate retaining wall back beam 5 is made of channel steel or angle steel, and the mounting hole has been seted up to the 5 sides of steel plate retaining wall back beam, and is unanimous with 3 horizontal edge round holes location of assembled steel plate retaining wall and interval to be convenient for the installation of assembled steel plate retaining wall 3.
Barricade hoist and mount stiffening beam 6 adopts the acromatic angle steel to make, just the slotted hole has been seted up on 6 limbs of barricade hoist and mount stiffening beam, 3 vertical direction edges of assembled steel sheet barricade correspond with the slotted hole and are provided with the round hole, and interval and location are the same with barricade hoist and mount stiffening beam 6, barricade hoist and mount stiffening beam 6 passes through bolt and 3 fixed connection of assembled steel sheet barricade, 6 limbs of barricade hoist and mount stiffening beam are perpendicular with 3 limits of assembled steel sheet barricade.
The vertical limbs of the retaining wall hoisting reinforcing beam 6 are attached to the concrete column foundation 1 by means of long circular hole adjustment so as to prevent the heaps from overflowing from the gap, and then the adjusting bolts are screwed down.
The working principle of the invention is as follows:
firstly, comprehensively determining the distance between concrete column bases 1 and the sectional dimension and the length of the concrete column bases 1 according to the stacking condition of projects and the scale of a factory, prefabricating in a prefabricating factory, pre-burying a counter-pull anchor part 2 in the concrete column bases 1 in the prefabricating process, transferring the concrete column bases 1 to the site, accurately positioning and pressing the piles to a designed elevation by using a pile pressing machine, welding a connecting part 4 on an end plate of the counter-pull anchor part 2 after the pile pressing is finished, enabling the elevation and the center positioning of the connecting part 4 to be consistent with the design, then connecting a retaining wall back beam 5 on the connecting part 4 by bolts, simultaneously determining the width and the thickness of a steel plate of an assembled steel plate retaining wall 3 according to the stacking condition and the distance and the penetration depth of the concrete column bases 1 by structural calculation, wherein the width is the same as the vertical spacing of the counter-pull anchor part, carrying out processing and forming in the factory, considering the stability of the steel plate in hoisting and the error in the construction of the concrete column, the method comprises the steps of hoisting an assembled steel plate retaining wall 3 to a preset position, connecting the assembled steel plate retaining wall 3 to a steel plate retaining wall back beam 5 through bolts, adjusting construction or machining errors of a concrete foundation 1, a connecting piece 4 and the steel plate retaining wall back beam 5 through long circular holes formed in the connecting piece 4, hoisting the assembled steel plate retaining wall 3 to the preset position, connecting the assembled steel plate retaining wall 3 to the steel plate retaining wall back beam 5 through bolts, enabling the bolts on a retaining wall hoisting reinforcing beam 6 to be loose at the moment, enabling a vertical limb of the retaining wall hoisting reinforcing beam 6 to be attached to the concrete foundation 1 through long circular hole adjustment formed in one limb of the retaining wall hoisting reinforcing beam 6, preventing stacking materials from overflowing from gaps, screwing adjusting bolts afterwards, mounting the assembled steel plate retaining wall to a concrete-spanning steel plate bin, and finishing the construction of the whole.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides a concrete column base steel sheet retaining wall structure envelope system, includes concrete column base (1), its characterized in that, be provided with two in the constitutional unit of concrete column base (1), a plurality of constitutional units link to each other and form whole barricade, be provided with in the concrete column base (1) and to drawing anchor spare (2), and be in vertical setting in the concrete column base (1). In a constitutional unit connecting piece (4), two relative distributions have all been welded at the both ends of split anchor piece (2) be provided with steel sheet barricade back of the body roof beam (5) between connecting piece (4), two from top to bottom be provided with assembled steel sheet barricade (3) between steel sheet barricade back of the body roof beam (5), there are barricade hoist stiffening beam (6) in the both sides of assembled steel sheet barricade (3) through bolt fixedly connected with.
2. A concrete column-based steel plate retaining wall structure envelope system as claimed in claim 1, wherein the center positioning of the counter-pulling anchor part (2) is the same as the connecting part (4).
3. The concrete column-based steel plate retaining wall structure envelope system of claim 1, wherein the connecting piece (4) is welded and fixed with the split anchor piece (2), the connecting piece (4) is provided with a long round hole, and the steel plate retaining wall back beam (5) is fixedly connected with the connecting piece (4) through a bolt.
4. The concrete column-based steel plate retaining wall structure envelope system of claim 1, wherein the steel plate retaining wall back beam (5) is made of channel steel or angle steel, and the side of the steel plate retaining wall back beam (5) is provided with mounting holes and is consistent with the span direction position of the assembled steel plate retaining wall (3).
5. The concrete column based steel plate retaining wall structure enclosure system according to claim 1, wherein the retaining wall hoisting stiffening beam (6) is made of an isolimb angle steel, a long round hole is formed in one limb of the retaining wall hoisting stiffening beam (6), a round hole is formed in the vertical edge of the assembly type steel plate retaining wall (3) corresponding to the long round hole, the distance and the positioning are the same as those of the retaining wall hoisting stiffening beam (6), the retaining wall hoisting stiffening beam (6) is fixedly connected with the assembly type steel plate retaining wall (3) through a bolt, and one limb of the retaining wall hoisting stiffening beam (6) is perpendicular to the edge of the assembly type steel plate retaining wall (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010401142.4A CN111561227A (en) | 2020-05-12 | 2020-05-12 | Concrete column base steel plate retaining wall structure enclosure system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010401142.4A CN111561227A (en) | 2020-05-12 | 2020-05-12 | Concrete column base steel plate retaining wall structure enclosure system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111561227A true CN111561227A (en) | 2020-08-21 |
Family
ID=72068071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010401142.4A Pending CN111561227A (en) | 2020-05-12 | 2020-05-12 | Concrete column base steel plate retaining wall structure enclosure system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111561227A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107249A (en) * | 2021-03-10 | 2021-07-13 | 中国电建集团河北省电力勘测设计研究院有限公司 | Assembled keeps off coal wall |
| CN114482694A (en) * | 2022-01-27 | 2022-05-13 | 桃江诚友绿色装配式建筑科技有限公司 | Assembled concrete greening construction enclosure wall |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130019545A1 (en) * | 2006-08-07 | 2013-01-24 | Andrew Buchanan | Engineered Wood Construction System for High Performance Structures |
| CN204715576U (en) * | 2015-03-30 | 2015-10-21 | 西安建筑科技大学 | A kind of antidetonation can repair Self-resetting framework-Mi rib metal wall structure |
| CN105735529A (en) * | 2016-04-14 | 2016-07-06 | 西安建筑科技大学 | Easily assembled cross-brace type steel frame steel plate shear wall structure |
| CN107227808A (en) * | 2017-07-04 | 2017-10-03 | 重庆大学 | A kind of buckling-restrained steel plate shear force wall system of full assembled |
| CN108560767A (en) * | 2018-03-22 | 2018-09-21 | 长安大学 | The assembled energy-consuming shear wall of dismountable moving and splicing and with frame connection method |
| CN109680796A (en) * | 2019-01-14 | 2019-04-26 | 重庆大学 | High-strength steel frame-overlapping corrugated sheet steel wall anti-side cold formed steel structure |
| CN109914617A (en) * | 2019-04-19 | 2019-06-21 | 中民筑友房屋科技集团有限公司 | A kind of assembling frame structural building building |
-
2020
- 2020-05-12 CN CN202010401142.4A patent/CN111561227A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130019545A1 (en) * | 2006-08-07 | 2013-01-24 | Andrew Buchanan | Engineered Wood Construction System for High Performance Structures |
| CN204715576U (en) * | 2015-03-30 | 2015-10-21 | 西安建筑科技大学 | A kind of antidetonation can repair Self-resetting framework-Mi rib metal wall structure |
| CN105735529A (en) * | 2016-04-14 | 2016-07-06 | 西安建筑科技大学 | Easily assembled cross-brace type steel frame steel plate shear wall structure |
| CN107227808A (en) * | 2017-07-04 | 2017-10-03 | 重庆大学 | A kind of buckling-restrained steel plate shear force wall system of full assembled |
| CN108560767A (en) * | 2018-03-22 | 2018-09-21 | 长安大学 | The assembled energy-consuming shear wall of dismountable moving and splicing and with frame connection method |
| CN109680796A (en) * | 2019-01-14 | 2019-04-26 | 重庆大学 | High-strength steel frame-overlapping corrugated sheet steel wall anti-side cold formed steel structure |
| CN109914617A (en) * | 2019-04-19 | 2019-06-21 | 中民筑友房屋科技集团有限公司 | A kind of assembling frame structural building building |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107249A (en) * | 2021-03-10 | 2021-07-13 | 中国电建集团河北省电力勘测设计研究院有限公司 | Assembled keeps off coal wall |
| CN114482694A (en) * | 2022-01-27 | 2022-05-13 | 桃江诚友绿色装配式建筑科技有限公司 | Assembled concrete greening construction enclosure wall |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111561227A (en) | Concrete column base steel plate retaining wall structure enclosure system | |
| CN210857510U (en) | Beam tenon-and-mortise joint unit and connector of beam tenon-and-mortise joint unit and profile steel concrete beam | |
| CN106592775A (en) | High-precision embedded part reinforcing and mounting device and method and purpose | |
| CN212201368U (en) | Device for accurately adjusting and positioning embedded bolt | |
| CN215055464U (en) | Quick hoist and mount positioner of PC superimposed sheet | |
| CN113565210A (en) | Assembly type foundation bolt positioning device and construction method | |
| CN110629782B (en) | Adjusting method of anchor bolt offline assembly device | |
| CN206495329U (en) | Adjustable high-precision foundation bolt reinforcing mold and reinforcing system | |
| CN214462738U (en) | Butt joint section steel column stagger correction device | |
| CN211948530U (en) | Positioning device for embedding foundation bolt | |
| CN211735427U (en) | Adjustable forming lattice column jig frame | |
| CN214170072U (en) | Steel construction factory building structure based on exposed foundation | |
| CN210766755U (en) | Trestle device for supporting anchor rod drilling machine | |
| CN219004406U (en) | Working platform of steel bar cutting machine | |
| CN113699961A (en) | Pile-beam connecting structure and method for offshore independent fixed concrete mixing station | |
| CN111980225A (en) | Connecting structure of prefabricated wall panel and steel frame column and construction method thereof | |
| CN218090545U (en) | Pier-pile steel-concrete transition joint steel plate levelness and plane position adjusting device | |
| JP5680305B2 (en) | Column vertical position adjustment method | |
| CN217174381U (en) | Fixing fastener for top platform of steel pipe pile support | |
| CN217839968U (en) | Adjusting device for precast pile head | |
| CN113104728B (en) | Method for adjusting track | |
| CN215055516U (en) | Assembled precast beam guiding orientation device | |
| CN218814406U (en) | Auxiliary connection tool for assembled steel structure beam column | |
| CN220768868U (en) | Wall post template school instrument that rises | |
| CN217399706U (en) | Height-adjustable steel structure modular building foundation connection node |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200821 |